Demons and Druids is by James Patterson. The third book in the Daniel X series. Daniel heads to England to hunt Phosphorius Beta, evil alien number three, an explosive demon of fire. His quest takes him back in time to the Middle Ages where he meets Merlin and King Arthur. Daniel must really step up his skills for this hot number. Boys, especially, will enjoy this series.
Ratings: 7th grade - 9 out of 10.